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Start Over Author "Wu, Sijin" Publisher spie - international society of optical engineering
3 results on '"Wu, Sijin"'

3. Simultaneous and precision measurement of yaw and pitch using digital speckle pattern interferometry.

Author

Wu, Fan, Wu, Sijin, Li, Weixian, and Li, Xin

Subjects
*SPECKLE interferometry, *SPECKLE interference, *MEASUREMENT errors, *MEASUREMENT
Abstract

A method of simultaneous and precision measurement of yaw and pitch based on digital speckle pattern interferometry is proposed. The relationship between the yaw/pitch and phase distribution is analyzed in detail, resulting in the establishment of the yaw and pitch simultaneous measurement model. A plane fitting method is proposed to separate the two angle motions from a single phase map. The proposed method enjoys the advantages of being free of cooperative target, high-resolution measurement, and compact optical setup. Experimental results show the mean absolute error of the measurement is <1 μrad. [ABSTRACT FROM AUTHOR]

Published
2021
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